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| Query : 2007A&A...466L..13R |
2007A&A...466L..13R - Astronomy and Astrophysics, volume 466, L13-16 (2007/5-1)
Rapid magnetic flux variability on the flare star CN Leonis.
REINERS A., SCHMITT J.H.M.M. and LIEFKE C.
Abstract (from CDS):
We present UVES/VLT observations of the nearby flare star CN Leo covering the Wing-Ford FeH band near 1µm with high spectral resolution. Some of the FeH absorption lines in this band are magnetically sensitive and allow a measurement of the mean magnetic flux on CN Leo. Our observations, covering three nights separated by 48 hours each, allow a clear detection of a mean magnetic field of Bf≃2.2kG. The differential flux measurements show a night-to-night variability with extremely high significance. Finally, our data strongly suggest magnetic flux variability on time scales as low as 6 hours in line with chromospheric variability.
Abstract Copyright: ∼
Journal keyword(s): stars: activity - stars: late-type - stars: magnetic fields - stars: individual: CN Leo
Simbad objects: 3
| Number of rows : 3 |
| N | Identifier | Otype |
ICRS (J2000) RA |
ICRS (J2000) DEC |
Mag U | Mag B | Mag V | Mag R | Mag I | Sp type |
#ref
1850 - 2024 |
#notes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | G 158-27 | PM* | 00 06 43.1973190107 | -07 32 17.019101068 | 13.837 | 13.605 | 10.15 | M5.5V | 210 | 0 | ||
| 2 | Wolf 359 | Er* | 10 56 28.9208702274 | +07 00 53.003285286 | 16.706 | 15.541 | 13.507 | 11.684 | 9.507 | dM6 | 721 | 0 |
| 3 | V* EV Lac | Er* | 22 46 49.7312610268 | +44 20 02.374381562 | 11.85 | 10.26 | 9.89 | M4.0Ve | 902 | 2 |
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